Alpha™ Siren Series

All Products Auditory Warning Alpha™ Siren Series

Auditory Warning

Alpha™ Siren Series

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ALPHA12S

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ALPHA12S

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ALPHASL

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ALPHASL

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ALPHASL

Auditory Warning

Alpha™ Siren Series

The Alpha Siren Series delivers up to 200 watts of auditory warning power in a compact design ideal for undercover and volunteer vehicles. Offering multiple warning tones, hands-free operation, and horn ring override capability, the Alpha Siren Series allows for flexible, effective control in emergency situations. With easy set-up and configuration using dip switches, it meets system requirements without special ordering, making it a convenient option for various applications. Whether used for traffic stops, pursuits, or crowd management, the Alpha Siren Series ensures reliable, adaptable performance.

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Features

Compact, Versatile Design: Ideal for undercover, volunteer, or other applications not requiring radio repeat or PA functionality
Flexible Configuration: Easily adapt to local requirements without need for special orders
Harmonic Airhorn Tones: Produces harmonically rich composite tones for clear, commanding sound that cuts through noise
Dynamic Siren Control: Operate siren tones using the horn ring or auxiliary switches, providing flexible and responsive functionality
Tone Cycling Capability: Seamlessly cycles through 2 or 3 siren tones for enhanced warning effectiveness
ALPHA12S Model: Features a self-contained 100-watt siren with convenient DIP switch configuration for simplified setup
ALPHASL Model: Offers a remote 200-watt siren with advanced Scan-Lock™ programmability, enabling full tone customization
Control Options Available: Pair with Whelen’s ALPHA line of switches for tailored control and operation.

Specs
Dimensions
Models
Documentation

Specifications

Please note: Not all specifications will apply to every model. Consult your sales representative to confirm specs.

	ALPHA12S	ALPHASL
Inputs/Outputs	100-watt Output	200-watt Output
Speakers	Operates (1) 100-watt Speaker	Operates (1) or (2) 100-watt Speakers
Microphones	No Microphone	No Microphone
Technology	Scan-Lock™: Advanced siren tone control Hands-Free Operation	Scan-Lock™: Advanced siren tone control Hands-Free Operation
Tones	N/A	20 Scan-Lock™ siren tones
Control	Operate siren tones using the horn ring or separate switches	Operate siren tones using the horn ring or separate switches
Customization	Switches Available: ALPHA1 - Single Rocker On/Off ALPHA2 - Single On/Off Plus Momentary for Airhorn ALPHA3 - Tone 1/Off/Tone 2 Switch ALPHA4 - Three Switch Operation ALPHA5 - Three Position Toggle Switch	Switches Available: ALPHA1 - Single Rocker On/Off ALPHA2 - Single On/Off Plus Momentary for Airhorn ALPHA3 - Tone 1/Off/Tone 2 Switch ALPHA4 - Three Switch Operation ALPHA5 - Three Position Toggle Switch
Construction	Output Protection: Open and short circuit protected Easy Installation: Pre-wired with quick disconnect plugs for easy service and fast replacement	Output Protection: Open and short circuit protected Easy Installation: Pre-wired with quick disconnect plugs for easy service and fast replacement
Mounting	Bail Bracket, Spade fuse with in-line connector ALPHA1-4 switches mount via included “L” bracket	Base Mount Flange, Spade fuse with PC board ALPHA1-4 switches mount via included “L” bracket
Included Cables & Hardware	6 pin amp Mate-N-Lok®, 24” (60.96 cm) wiring pigtail	16 position input connector
Certifications	SAE Standards SAE Class A Regulatory Compliance CA Title 13 Certifications applicable when paired with one Whelen 100-watt speaker	SAE Standards SAE Class A Regulatory Compliance CA Title 13 Certifications applicable when paired with one Whelen 100-watt speaker
Warranty	2-year	2-year
Voltage	12 VDC	12 VDC
Amps	8.0 (peak)	15.0 (peak)
Size	Height: 3.46” (8.79 cm) Width: 6.90” (17.53 cm) Depth: 4.62” (11.73 cm) Weight: 2.2 lbs (1 kg)	Height: 2.25” (5.721 cm) Width: 4.75” (12.07 cm) Depth: 5.00” (12.70 cm) Weight: 2.4 lbs (1.09 kg)